以江苏、安徽两省发育在基性岩和下蜀黄土母质的丘陵岗地黄棕壤为试材,进行土壤晶体光学和化学分析.结果表明,粘盘层中一半以上的粘粘是残积物,淀积粘粒只有11～49%之间.正是由于长期的粘粒和盐基淋溶淀积,才能形成坚硬的粘盘层,在粘粒迁移量最大的剖面中,粘盘层的发育最好.此外,通过土壤微形态观察,也发现粘盘层中有明显的淀积粘粒胶膜和铁锰结核. The crystal and chemical analysis of the soils were conducted using the yellow brown soil developed in the basement rocks of the basic rock and the Xiashu loess parent material in Jiangsu and Anhui provinces.The results showed that more than half of the sticking in the sticky layer was residual matter, It is only because of long-term clay and salt-based leaching that a hard sticky layer can be formed. In the section with the largest migration of clay, the development of the sticky layer The best.In addition, through the observation of soil micromorphology, also found in the sticky layer of clay film and deposition of iron manganese nodules.